Leaving a dog alone in the car during the sweltering summer months is one of the more irresponsible things you can do as a pet owner, but a new heat-sensitive collar aims to help those with no other option keep tabs on their furry friends. Developed by Rethink Toronto in conjunction with the Toronto Human Society, the Dog Caller features both a thermistor and built-in SIM card, with the latter giving the collar the ability to send owners a text message alert if and when the temperature of their canine companion rises to unsafe levels — roughly 79 degrees Fahrenheit (26 degress Celsius). Though currently still in the prototype phase, Rethink hopes a bit of crowd funding will help propel the Dog Caller to market sometime in 2013 at an…

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Heat-sensing dog collar sends SMS alerts when your pet is dangerously hot

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